Sound travels fifteen times faster through steel than through air.
134
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
One third of the electricity produced on earth is used to power electric light bulbs!
75
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
A ball of glass will bounce higher than a ball made of rubber.
73
A cesium atom in an atomic clock beats over nine billion times a second.
43
One barrel of petroleum holds 42 gallons.
20